Air-port for vessels



(N Modell) No. 292.64m

PatetedJanQ'ZQg 11884,.'1 l i.

FIGA.'

vHal.

` has'.

wlTNEssEs:

TORTAv JOHN n. roLMnn, or PHIL Ai RLPORT 'Pimm oma@ annum-UA, jrnnnsrnvnnm.

srnerrrcn'rrorr forming partof Lettesratem na'eeaeio, dated January 2e, 1824.

vApplication filed Ma "o all whom t may concern:

vBe itknown that I, JOHN F. FoLMnR, of the city and county of Philadelphia, in the State of Pennsylvania, have invented certain new and useful Improvements in Air-Ports for Vessels, of which improvements the following is a specification.

lThe object of my invention is `to providean air-port of simple and inexpensive construe,- tion, which can be readily'and conveniently opened and closed, and which, when closed,` will effeetually prevent the entrance of water, and be .eXempt from liability to accidental displacement or to be tampered with by unauthorized persons.

To this end my improvements consist in certain novel devices and combinations, including a fixed framehaving an inwardlyprojecting flange, a sash i or glass support hinged thereto, and having a packing or facing abutting against said fiange, and a series of circumferential recesses, a sash-pivot passing through lugs upon the-sash and through a slotted or oblong hole in a standard upon'the frame, a cireumferentially-recessed dead-plate or shutter, and a series of balanced clamps adapted to fit and Vbe secured upon studs on the frame and to enter the circumferential recesses of the sash or the dead-plate, as the ease may be. Theimprovements claimed are hereinafter more fully set forth.

In the accompanying drawings, Figure l is 'a view in elevation of an air-port embodying' my invention, as seen from the inside of a vessel; Figs. 2 and 3, sections through the same at the lines a x and y y, respectively, of Fig. 1; Fig. 4, a view in eleva-tion of the deadplate; Fig. 5, a section through the same at the line z z of Fig. 4; and Fig. 6, an isometrical view, on an enlarged scale, of one of the clamps detached.

In,the practice of my invention I form of cast metal an annular plate or frame, A, adapted to be secured to the planking or hullplates of a vessel by bolts passing through holes a, and having a central opening' surrounded by a cylindrical flange, a', which enters a corresponding opening in the hull. A short cylindrical iiange, a2, surrounds the central opening on the opposite side" of the plate A, the inner surface of said ilange being either cony 1,1883. (No mollet),

li tinuous with or of less diameter than that of the'tlange a', so as to prevent the formation of' a shoulder or recess for the lodgment of water. An annular sash, B, having a pair of lugs, b, at one side, is hinged to a standard, ai, on the frame Al by a pin or bolt, b, which passes through the lugs b and through an oblong or slotted hole, aj', in the standard a, the hole a* being elongated at a right angle to the face of the frame A, fora purpose presently to be described. The opening of the sash B is closed by a circular plate of heavy glass, B', which is clamped against a lip or flange, b2, by a ring, B2, screwed into the sash B 011 the opposite side of the glass, said ring having a flange, b", which bears against a ring of rubber or other packing, bt, when the ring B2 is screwed to the tight bearing necessary to coniine the glass. A packing-ringr, is let into the face of the sash B adjacent tothe frame A, said packing-ring abutting against the fiange a2 of the frame when the sash is swung into position to close theopcning of the port. The sash is secured,when closed, by al Aseries of balanced ',elanips, GQeachg/having two arms of equal weight and dimensions projecting from a central hubvor-boss, in which is formed an opening of such diameter as to t freely around a stud, c, secured in the frame. A ^"series of circumferential recesses, b, is formed in the sash B in such relation to the studs c that one of the arms of each of the clamps C may enter the recess adjacent to the stud on which said clamp is placed, and,when vthe clamps are so placed, they are brought to a tight bearing upon the sash by nuts c engaging threads on the several studs. The freedom of movement of the' pivot of the sash toward and fromrtheframe A in the slotted .hole a" enables a uniform bearing to be obtained entirely around the sash when the clamps are tightened thereon by the nuts, and by the engagement of the clamps with the recessesxthey are prevented from being slackened by jarring-or blows, or without the use of a Wrench suited to the nuts c. The arms of theclamps being ofl equal dimensions and weight, the clamps are balanced upon the studs, and hence can be readily'swung into and out of the recesses.

For the purpose of providing for suoli conioo tingcneies as the breakage of the glass 0r the prevalence of exceptionally heavy weather, in which its use might not be deemed prudent, I provide a separate metallic dead-plate or shutter, D, adapted to fit into the central opening of the frame A, said lplate having on its side adjacent to the frame a packing-ring, d, which can abut against the iiange a, and on its opposite side a series of circumferential recesses, d, for the engagement of the clamps C, by which and by the nuts c the dead-plate may be secured to the frame when required, the sash B being previously swung out of the way to admit of its insertion. The dead-plate may be provided with a ring or eyebolt, by which it can be suspended in any convenient position adjacent to the port when not in use.

I claim as my invention and desire to secure by Letters Patent- 1. The combination of a plate or franiehaving a central opening and. adapted to be secured to the side of a vessel, a iiange snrrounding and continuous with or of less diameter than the inner surface of said opening, and a movable sash.having a packing-ring which abuis against the inner iiange of the frame, said sash being coupled to the frame by a hinge pin er bolt, and secured thereto by a series of circumferential clamps, these members being combined for joint operation, to admit of the swinging aside of the sash by the slackening ofthe clamps without removing the same, and the insertion of a deadplate which is adapted to be similarly secured and packed at its joint with the inner flange of the frame, substantially as set forth.

2. The combination, substantially as set forth, of a plate or frame having a central opening and adapted to be secured to the side of a vessel, a movable sash or dead-plate closing said opening, and a series of clamps, each secured by a nut upon a stud in the frame and entering a circumferential recess in the sash or dead-plate.

The combination, substantially as set forth, of a plate or frame having a central opening and adapted to be secured to the side of a vessel, a swinging sash or glass-'support having a series of circumferential recesses, and hinged to said plate or frame by a pin or bolt passing through an oblong or slotted hole in a standard thereon, and a series of clamps, each entering one of the recesses of the sash, and secured against the same by a nut engaging a stud upon the frame.

4. A balanced clalnp for securing an airport, sash, or shutter, having a central hub or boss and an opening therein for the passage of a supporting-stud and two clamping-arms, projecting one upon each side of the central hub, substantially as set forth.

JOHN F.l-`OL)IER.

lVitnesses:

J. Snowman' nLr., Axnnicw ZANE, Jr. 

